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  <title>预定义常量</title>

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</div><hr /><div id="pcntl.constants" class="appendix">
 <h1>预定义常量</h1>

 <p class="para">
 下面列出的信号列表用于支持进程控制函数。关于这些信号默认行为的更详细信息请查看您系统的
 signal（7）手册
 </p>
 <dl>

  
   <dt>

    <strong><code>WNOHANG</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>WUNTRACED</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIG_IGN</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIG_DFL</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIG_ERR</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGHUP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGINT</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGQUIT</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGILL</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGTRAP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGABRT</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGIOT</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGBUS</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGFPE</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGKILL</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGUSR1</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGSEGV</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGUSR2</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGPIPE</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGALRM</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGTERM</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGSTKFLT</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGCLD</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGCHLD</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGCONT</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGSTOP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGTSTP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGTTIN</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGTTOU</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGURG</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGXCPU</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGXFSZ</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGVTALRM</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGPROF</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGWINCH</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGPOLL</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGIO</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGPWR</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGSYS</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIGBABY</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIG_BLOCK</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIG_UNBLOCK</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SIG_SETMASK</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_USER</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_NOINFO</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_KERNEL</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_QUEUE</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_TIMER</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_MSGGQ</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_ASYNCIO</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_SIGIO</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SI_TKILL</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>CLD_EXITED</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>CLD_KILLED</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>CLD_DUMPED</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>CLD_TRAPPED</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>CLD_STOPPED</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>CLD_CONTINUED</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>TRAP_BRKPT</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>TRAP_TRACE</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>POLL_IN</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>POLL_OUT</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>POLL_MSG</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>POLL_ERR</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>POLL_PRI</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>POLL_HUP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>ILL_ILLOPC</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>ILL_ILLOPN</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>ILL_ILLADR</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>ILL_ILLTRP</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>ILL_PRVOPC</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>ILL_PRVREG</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>ILL_COPROC</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>ILL_BADSTK</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>FPE_INTDIV</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>FPE_INTOVF</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>FPE_FLTDIV</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>FPE_FLTOVF</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>FPE_FLTUND</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>FPE_FLTRES</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>FPE_FLTINV</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>FPE_FLTSUB</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SEGV_MAPERR</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>SEGV_ACCERR</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>BUS_ADRALN</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>BUS_ADRERR</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
  
   <dt>

    <strong><code>BUS_OBJERR</code></strong> 
    (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
   </dt>

   <dd>

    <span class="simpara">
     PHP 5.3.0之后版本可用。
    </span>
   </dd>

  
 </dl>

</div>
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